Device for feeding fluid, semifluid, and plastic substances



F. McLAUGHLIN.

DEVICE FOR FEEDING FLUID, 'SEMIFLUID, AND PLASTIC SUBSTANCES.

APPLICATIDN FILED OCT. [2, 1920 9 3 8 7 fl/m 2 2 2 2 6 I w H. I fizz 9 s t i 9 m 1 H 2 T M Am Q 2 \111! ill e m W m 5 D... 2 O 2 I 2 3 3 F. McLAUGHLIN.

DEVICE FOR FEEDING FLUID, SEMIFLUID, -AND PLASTIC SUBSTANCES.

, APPLICATION FILED OCT. 12, I920. 1,427,758.

Patented Aug. 29, 1922.

2 SHEETS-SHEET 2.

FIGIO INVENTQR.

FRANK M LAUGHLIN nan'ran sires PATENT rFICE;

. FRANK MoLAUGI-ILIN. 0F TORONTO. ONTARIO, CANADA.

Specification of Letters Patent. Patented Anon 211 1922 Application filed October 12, 1920. Serial No. 416,550.

To all H772 0m 2 may concern Be it known that I, FRANK MOL UGHLIN, of the city or Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Iniprovements in Devices for Feeding Fluid, Semifluid, and Plastic Substances, of which the following is a specification.

My invention relates to improvements in devices for feeding fluid, semi-fluid and plastic substances particularly applicable to lather brushes and the objector the invention is to devise means for forcing at low pressure a fluid, semi-fluid or plastic substance from a container forming a reservoir into the bristles ot a brush at a point in proximity to the free ends of the bristles, the discharge opening being located normally at the base of thebristles and it consists essentially of: the following arrangement and construction of parts as hereinafter more particularly explained.

Fig. 1 is a side elevation of a lather brush to which my invention is particularly adapted.

Fig, 2 is an enlarged vertical section through Fig. 1.

Fig. 3 is a sectional 3-3, Fig. 2.

Fig. i is an inverted. sectional plan view on line 4-.-l, Fig. 2.

Fig. 5 is a sectional View on line 5-5, Fig. 2.

Fig. 6 is a detail of the reservoir.

Fi 7 a detail of the brush base holder,

Big. 8 is a detail of: the brush base.

mg. 9 is a detail 01'' the center feed tube.

Fig, 10 is a detail of the center feed tube valve.

Fig, 11 a detail of the reservoir piston.

lu -the drawings like characters of reference indicate the corresponding parts in each figure.

1 indicates the container or reservoir in which the fluid or semrfluid such as liquid soap or plastic soap is contained when the device is used in connection with a shaving brush. The container 1 is formed of very thin metal and has a spiral thread 2 rolled in the cylindrical wall thereof for a purpose which will hereinafter appear. The lower end of the container 1 is flared outplan view on line ward at 3 so as to form an annular hollow bead 4, the center of the bottom being raised inward at 5 and provided at its center with a conical protuberance 6 surrounded by a depression 7 forming an annular groove around the protuberance 6. hollow neck which is also formed of thin metal into which spiral thread 9 is rolled. 10 indicates a cap provided with. a central circular orifice 11 and a depending flange 12 provided with a thread corresponding to the thread 9 with which it engages. The cap 10 is also provided with an inner flange 13 for a purpose which will hereinafter appear. i l indicates a tube which is preferably termed hexagonal in cross section. The tube 11- extends vertically throughthe orifice 11 and centrally through the container 1 in proximity to the lower end thereof, a slight clearance being left at such lower end between its interior edge and the protuberance 6 and between its lower end and the base of the groove 7. Although I have described the tube 141 as hexagonal, it will of course be understood that any shape might be employed having a flattened side or sides or any other form to produce a slidable engagement between the piston 4.1 and the tube 14. which at the saine'tirne will hold the piston. from rotating upon the tube. 15 indicates perforations formed in the wall of the tube 14. in proximity to its lower end. 16 indicates a collar which is secured to the tube 14 intermediately of its length and is located within the neck .8 of the container 1. The collar 16 fits the tube 1 1 and its outer periphery is cylindrical so as to fit within the circular flange 13. The space between the upper edge of the collar 16 and the cap 10 is filled with suitable packing 17. 18 indicates a collar which is also secured to the tube i i and is spaced apart from the cap 10. 19 indicates a compression spring extending between the cap 10 and the collar 18. 'The wall of the tube 14 in proximity to its upper end is thickened at 20 forming a reduced circular orifice 21 theupper edge of which is chamtered oft to form a valve seat 22. 23 indicates a reduced extension at the upper end of the. tube. V 2a indicates a sleeve provided with an hexagonal orifice 25 through which the hexagonal tube 14 e1;-

8 indicates a tends. The lower end of the sleeve 24 is provided with a brush base receiving cup 26 the wall 27 of which is provided with an internal thread 28.

It will be noted particularly on referring to Fig. 3 that the exterior of the sleeve 24 is cylindrical. 29 indicates a collar which surrounds the reduced portion 23 of the tube 14 and is suitably secured thereto and forms means for preventing the withdrawal of the sleeve 24 off the tube 14. 30 indicates a lather brush provided with a metal base 31 fitting within the cup 26 and provided with an external thread 33 engaging; the thread 28 of the cup 26. The base 31 is pro vided with a cylindrical sleeve 32 fitting upon the sleeve 24. It will be noted that the interior diameter of the sleeve 32 is slightly greater than the exterior diameter of the collar 23 and therefore the brush and brush base can be easily removed by unscrewing such brush base from the threaded portion of the cup 26. 84 indicates a compression spring extending between the collar 18 and the opposing face of the cup 26. The spring 34 normally forces the cup 26 upward and the opposing end of the sleeve 24 of such cup against the collar 29. 35 indicates a spider provided with openings 36. 37 indicates a valve stem. extending from the spider 35 and provided at its upper end with a conical valve 38 coacting with the valve seat 22. 39 indicates a fine spiral spring which is conical. in form extending at its small end around the valve stem 37 and bearing upon the spider 35. The upper or large end of the spiral sprin 39 bears against the shoulder 40 formed by the interior enlargement of the wall of the tube 14. 41 indicates a piston located with in the container 1, and provided with a central hexagonal orifice fitting the tube '14. The piston 41 is formed by an upper metal plate 42 and a lower metal plate 43. The metal plate 43 is provided with a depending annular flange 44 which also has a thread 45 rolled therein which engages with the thread 2 of the container 1. 46 indicates a packing of leather or other suitable material located between. plates 42 and 43, such plates being; secured together by rivets 47 extending; through the plates and packing. The flange 44 is provided with a slotted opening 48. 49 indicates a pawl pivoted upon a pin 50 and provided with a pointed or sharpened outer end which passes through the slot 48 and bears against the wall of the container 1 within the threadQ. The pawl 49 is spring" held in this position by the spring 52. Such pawl as will be readily seen by referring to Fig. 4 is inclined in the opposite direction to the direction of rotation of the container 1. The soap or other fluid or semi-fluid substance adapted to .be fed into the brush is contained in the container below the piston 41, that is between the piston and the bottom of the container surrounding the lower portion of the tube 14. It will also be understood that the piston is shown in the drawing in an intermediate position which it assumes during its operation.

Having described the principal parts involved in my invention 1 will briefly describe the operation of the same.

The manipulator of the brush when he desires to supply such brush with soap grips the brush base holder formed by the cup 26 in one hand and the beaded portion 4 of the container in the other hand. He then forces the parts together compressing the sprin 84. By this means the brush base together with the sleeve 24 and the cup 26 is slid downward upon the tube 14 and simultaneously the valve seat 92 and valve head. 38 are projected upward longitudinally of the brush bristles to a point in proximity to the free ends of the bristles. The manipulator of the brush while holding the brush holder stationary with one hand, turns the container 1 with the other hand. As the piston 40 held from movement by reason of the sides of its central hexagonal orifice binding upon the hexagonal tube 14, the reservoir is carried longitudinally by the thread 2 enn'zra'ing; the thread 45 compressing the spring 19. As soon as the reservoir is manually released the spring 19 carries it downward together with the piston 41 which slides freely down the tube 14 to, a new position in which it again binds on the tube at the next opera tion of the reservoir. By this means the soap is forced into the interior of the tube 14 through the perforations 15, the lower end of the tube of course being forced against'the base of the groove 7 as the compression spring 19 yields. The soap as it is forced longitudinally of the tube 14 exerts pressure against the valve 38 forcing it-longitudinal in the same direction against the pressure of the fine spring- 39 thereby carrying; the valve head 38 off its seat. The soap or other fluid or plastic substance is forced through the opening 36 of the spider between the c uvolutions of the spring 39 and through the orifice 21 past the open valve 38 into the bristles of the brush in proximity to the free ends of the bristles. Upon releasing the brush it is automatically carried back to its normal position thereby withdrawin the valve from the free ends of the bristles returning it to its normal position in the brush base.

In order to prevent the reservoir being; retilled I have provided the pawl 49. During the normal-operation of feeding the reservoir contents into the brusl by turning;- the reservoir in one direction the point of the pawl freely follows the thread of the reservoir from end to end. Should it be at tempted, howeven to turn the reservoir piston to its normal po on with the idea of refilling the reservoir, the point of the pawl 4-9' Wlll bear upon the wall of the reservoir, and the [point of the pawl being sharp will tend to indentthe wall of the reservoir and lock the piston from turning be used for feeding fluid or semifluid of any kind into any other type of brush so that such fluid or semi-fluid is ejected into the bristles at low pressure or it may be used in any location where a gradual controlled feed of a fluid or semi-fluid substance is desired.

It will be noted that the lower end of the discharge tube 14: is provided with a cylindrical portion around which the piston 41 extends when brought to its final position against the bottom of the reservoir.

By this means it will readily be seen that the reservoir may be turned independently of the tube and brush head so that the reservoir may be removed together with the pis-.

ton locked therein and so that a new reservoir may be screwed into position within the cap.

What I claim as my invention is.

1. In a dispenser for fluid, semi-fluid and plastic substances, a tube adapted to discharge at its upper end, a reservoir turnably carried upon the tube and provided with a spiral thread formed in the wall thereof and having the lower end of the tube located therein, a piston slidably carried upon that portion of the tube within the reservoir and engaging the spiral thread of the reservoir, means against which the piston binds during the return movement of the reservoir for preventing the turning of the piston upon the tube, and yielding means permitting longitudinal movement of the reservoir upon the piston.

2. In a dispenser for fluid, semi-fluid and plastic substances, a discharge tube, a piston mounted and longitudinally guided upon the tube and adapted to bind thereon when turned, areservoir having an interior thread engaging the periphery of the piston 50 as to move upward when turned upon the piston during the binding action of such piston upon the tube, a compression spring bearing against the outer face of the upper end of the reservoir and adapted to yield when the reservoir is turned in one direction and to expand to force the piston and reservoir downward when the reservoir is released at the end of its turning movement.

3. In a dispenser for fluid, semi-fluid and plastic substances, a feed tube having a'flat side, a reservoir turnably and longitudinally movabl'ethereon and through the upper end of which the feed tube extends, a piston mounted upon the tube and engaging the flattened side'and adapted to bind in a stationary position upon such tube when the reservoir is turned, a threaded engagement between the wall of the reservoir and the periphery of the piston, the said threaded engagement being adapted to carry the lower end of the reservoir upward towards the piston when the reservoir is turned, and a spring bearingagainst the outer face of the upper end of the reservoir and adapted to yield to permit the upward movement ofthe reservoir as it is turned and to expand when the reservoir is released at the end of its turning movement to carry the piston and reservoir downward upon the tube.

4. In a device of the class desoribecl, a stem-like member, a turnable cylinder surrounding such member, a piston having threaded engagement wit-h the cylinder and adapted to bind on such stem-like member by the aforesaid turning movement, and resilient means compressed by the longitudinal movement of the cylinder during such turn- I ing movement and binding action and adapt ed to carry the cylinder together with the piston longitudinally in the opposite direction to th stem.

5. In a dispenser for fluid, semi-fluid, and plastic substances, a main supporting memher, a reservoir turnably carried on such member and having an outlet at one end, a piston having a threaded engagement with the wall of the reservoir, said supporting member being provided with means for holding the piston stationary as the reservoir is turned in the forward direction, resilient means opposing such forward movement and adapted to be compressed thereby and to carry the reservoir and piston longitudinally in the opposite direction upon the main sup port. I

6. In a device of the class described, a stem-like member, a piston through which the stem-like member freely extends, a turnable cylinder surrounding suchmember and piston and having a threaded engagement with the piston and adapted when turned to force the piston to bind on such stem like member,'means opposing the forward longitudinal movement of the cylinder upon the stem and adapted to be compressed during the binding action of the piston by such forward longitudinal movement during the turning movement of the cylinder and adapted when released to carry the cylinder together with the piston longitudinally in the opposite direction to the aforesaid forward longitudinal movement.

' 7 In a dispenser for fluid, semi-fluid, and plastic substances, a main supporting memher, a reservoirturnably carried on such member, and from which the contents is discharged, a piston having a threaded engageinent With the Wall of the reservoir, means for holding the piston stationary as the reservoir is turned in the forward direction, resilient means opposing the longitudinal movement of the reservoir during such forward movement and adapted to be compressed thereby and to carry the reservoir and piston longitudinally in the opposite direction upon the main support when such reservoir is released.

FRANK MOLAUGHLIN. 

